ATE117478T1 - CIRCUIT ARRANGEMENT FOR EXCHANGE POINTS OF A MESH TELECOMMUNICATION NETWORK. - Google Patents

CIRCUIT ARRANGEMENT FOR EXCHANGE POINTS OF A MESH TELECOMMUNICATION NETWORK.

Info

Publication number
ATE117478T1
ATE117478T1 AT87201639T AT87201639T ATE117478T1 AT E117478 T1 ATE117478 T1 AT E117478T1 AT 87201639 T AT87201639 T AT 87201639T AT 87201639 T AT87201639 T AT 87201639T AT E117478 T1 ATE117478 T1 AT E117478T1
Authority
AT
Austria
Prior art keywords
exchange
synchronization
class
identification
network
Prior art date
Application number
AT87201639T
Other languages
German (de)
Inventor
Manfred Dipl-Ing Maisel
Erich Dipl-Ing Koelle
Gerhard Dipl-Ing Hauenstein
Original Assignee
Philips Electronics Nv
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Philips Electronics Nv filed Critical Philips Electronics Nv
Application granted granted Critical
Publication of ATE117478T1 publication Critical patent/ATE117478T1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0635—Clock or time synchronisation in a network
    • H04J3/0679—Clock or time synchronisation in a network by determining clock distribution path in a network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0635—Clock or time synchronisation in a network
    • H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
    • H04J3/0647—Synchronisation among TDM nodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephonic Communication Services (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Sorting Of Articles (AREA)
  • Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)

Abstract

In a mesh telecommunication network in which a hierarchic synchronization method is used for synchronizing the clock pulses of exchanges in such network, a class identification is assigned to the clock pulses of each echange corresponding to a hierarchical order of all the exchanges in the network. To maintain synchronization regardless of changes in the network configuration or failure of interconnecting lines, a synchronization identification is additionally assigned to each exchange. Each exchange transmits its class and synchronization identifications to the exchanges connected thereto, and all the identification received at any exchange are compared to determine the exchange connected thereto having the highest class identification and the highest synchronization identification in such class. The sychronizing clock pulses of such highest order exchange are then used for synchronization. Each exchange may also add to its identifications a mark to distinguish different operating conditions of the network. The reception at each exchange of the class and synchronization identifications transmitted by exchanges connected thereto is effected within presettable time intervals.
AT87201639T 1986-09-03 1987-08-31 CIRCUIT ARRANGEMENT FOR EXCHANGE POINTS OF A MESH TELECOMMUNICATION NETWORK. ATE117478T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19863629931 DE3629931A1 (en) 1986-09-03 1986-09-03 HIERARCHICAL SYNCHRONIZATION METHOD AND CIRCUIT ARRANGEMENT FOR SWITCHING CENTERS OF A INTERMEDIATED TELECOMMUNICATION NETWORK

Publications (1)

Publication Number Publication Date
ATE117478T1 true ATE117478T1 (en) 1995-02-15

Family

ID=6308795

Family Applications (1)

Application Number Title Priority Date Filing Date
AT87201639T ATE117478T1 (en) 1986-09-03 1987-08-31 CIRCUIT ARRANGEMENT FOR EXCHANGE POINTS OF A MESH TELECOMMUNICATION NETWORK.

Country Status (4)

Country Link
US (1) US4837850A (en)
EP (1) EP0262705B1 (en)
AT (1) ATE117478T1 (en)
DE (2) DE3629931A1 (en)

Families Citing this family (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1000414A7 (en) * 1987-03-18 1988-11-22 Bell Telephone Mfg Asynchronous based on time division operating communication.
DE3809089A1 (en) * 1988-03-18 1989-09-28 Philips Patentverwaltung Exchange for a meshed telecommunications network
DE3833940A1 (en) * 1988-09-22 1990-04-05 Siemens Ag METHOD FOR RE-SYNCHRONIZING A SWITCH CENTER IN A TELECOMMUNICATION NETWORK
US4939753A (en) * 1989-02-24 1990-07-03 Rosemount Inc. Time synchronization of control networks
US4998262A (en) * 1989-10-10 1991-03-05 Hewlett-Packard Company Generation of topology independent reference signals
FR2670345B1 (en) * 1990-12-11 1994-09-30 Alcatel Business Systems METHOD FOR ENSURING THE PERMANENCE OF THE SYNCHRONIZATION OF THE NODES OF A PRIVATE TELECOMMUNICATIONS NETWORK ON THE BEST AVAILABLE CLOCKS AND CORRESPONDING NETWORK.
DE4122276C2 (en) * 1991-07-05 1995-02-02 Philips Patentverwaltung Hierarchical synchronization process for a digital communication system
JPH0575635A (en) * 1991-09-12 1993-03-26 Hitachi Ltd Network synchronization management system and management system
US5613211A (en) * 1992-10-07 1997-03-18 Nippon Steel Corporation Method of establishing inter base-station synchronization and mobile radio communicaton system using the method
FI91690C (en) * 1992-11-09 1994-07-25 Nokia Telecommunications Oy Hierarchical synchronization procedure and a data traffic system that uses message-based synchronization
FI92126C (en) * 1992-11-09 1994-09-26 Nokia Telecommunications Oy Network arrangement
FI91689C (en) * 1992-11-09 1994-07-25 Nokia Telecommunications Oy Hierarchical synchronization method and communication system using message-based synchronization
FI92358C (en) * 1992-11-09 1994-10-25 Nokia Telecommunications Oy Hierarchical synchronization method and communication system using message-based synchronization
US5418934A (en) * 1993-09-30 1995-05-23 Intel Corporation Synchronizing chained distributed digital chronometers by the use of an echo signal
FI95976C (en) 1994-02-25 1996-04-10 Nokia Telecommunications Oy Network arrangement
FI95975C (en) * 1994-02-25 1996-04-10 Nokia Telecommunications Oy Hierarchical synchronization method
FI95977C (en) * 1994-02-25 1996-04-10 Nokia Telecommunications Oy Network arrangement
FI95978C (en) * 1994-03-01 1996-04-10 Nokia Telecommunications Oy Hierarchical synchronization method
FI98770C (en) * 1994-03-01 1997-08-11 Nokia Telecommunications Oy Hierarchical synchronization method
FI95979C (en) * 1994-03-01 1996-04-10 Nokia Telecommunications Oy Hierarchical synchronization procedure
US6292508B1 (en) 1994-03-03 2001-09-18 Proxim, Inc. Method and apparatus for managing power in a frequency hopping medium access control protocol
WO1995024081A1 (en) * 1994-03-03 1995-09-08 Proxim, Inc. Frequency hopping medium access control protocol
JP2921711B2 (en) * 1994-07-06 1999-07-19 エヌ・ティ・ティ移動通信網株式会社 Mobile communication system using base station frequency correction method
US5699388A (en) * 1995-06-21 1997-12-16 Motorola, Inc. System and method for fully distributed synchronization of a radio communication network
FI98583C (en) * 1995-06-28 1997-07-10 Nokia Telecommunications Oy Implementation of a certified bus in a telecommunication network
FI98582C (en) * 1995-06-28 1997-07-10 Nokia Telecommunications Oy Realization of a secure bus in a data communication network
JP3197793B2 (en) * 1995-07-03 2001-08-13 富士通株式会社 Wireless device
US6061409A (en) * 1996-06-27 2000-05-09 Matsushita Electric Industrial Co., Ltd. Synchronization recovery for a mobile telephone
FI104665B (en) * 1996-09-30 2000-04-14 Nokia Networks Oy Hierarchical synchronization method
FI104593B (en) * 1996-09-30 2000-02-29 Nokia Networks Oy Hierarchical synchronization procedure
DE19653261A1 (en) 1996-12-20 1998-06-25 Alsthom Cge Alcatel Synchronous digital message transmission system, control device, network element and central clock generator
FI103307B1 (en) 1997-02-11 1999-05-31 Nokia Telecommunications Oy Communication network synchronization
FI102442B (en) * 1997-02-19 1998-11-30 Nokia Telecommunications Oy Synchronization of a data communication network
US6751196B1 (en) * 1997-08-27 2004-06-15 Philips Electronics North America Corp. Apparatus and method for peer-to-peer link monitoring of a wireless network with centralized control
DE19849458A1 (en) * 1998-10-28 2000-05-04 Philips Corp Intellectual Pty Wireless network with clock synchronization
US6714563B1 (en) * 1999-04-26 2004-03-30 Cisco Technology, Inc. Network clock synchronization scheme
US20020178256A1 (en) * 2001-03-16 2002-11-28 Johann Arnold System and method for introducing redundancy mechanisms into a communication system
US7586888B2 (en) * 2005-02-17 2009-09-08 Mobitrum Corporation Method and system for mesh network embedded devices
US7630736B2 (en) * 2005-10-11 2009-12-08 Mobitrum Corporation Method and system for spatial data input, manipulation and distribution via an adaptive wireless transceiver
USRE47894E1 (en) 2006-07-27 2020-03-03 Iii Holdings 2, Llc Method and system for dynamic information exchange on location aware mesh network devices
US8427979B1 (en) 2006-07-27 2013-04-23 Mobitrum Corporation Method and system for dynamic information exchange on location aware mesh network devices
US8305936B2 (en) 2006-07-27 2012-11-06 Mobitrum Corporation Method and system for dynamic information exchange on a mesh network in a vehicle
US7801058B2 (en) * 2006-07-27 2010-09-21 Mobitrum Corporation Method and system for dynamic information exchange on mesh network devices
US8411590B2 (en) 2006-07-27 2013-04-02 Mobitrum Corporation Mesh network remote control device
US8305935B2 (en) * 2006-07-27 2012-11-06 Mobitrum Corporation Method and system for dynamic information exchange on location aware mesh network devices
US20090189739A1 (en) * 2008-01-25 2009-07-30 Mobitrum Corporation Passive voice enabled rfid devices

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2986723A (en) * 1960-02-26 1961-05-30 Bell Telephone Labor Inc Synchronization in a system of interconnected units
US4142069A (en) * 1977-06-20 1979-02-27 The United States Of America As Represented By The Secretary Of The Army Time reference distribution technique
DE2743252A1 (en) * 1977-09-26 1979-04-05 Siemens Ag METHOD FOR SYNCHRONIZING OFFICE CLOCKS PROVIDED IN SWITCHING OFFICES OF A TELECOMMUNICATION NETWORK
US4370648A (en) * 1981-03-31 1983-01-25 Siemens Corporation Synchronizing circuit for use with a telecommunication system
FR2577089B1 (en) * 1985-02-07 1987-03-06 Thomson Csf Mat Tel DEVICE FOR TRANSMITTING A CLOCK SIGNAL ACCOMPANIED BY A SYNCHRONIZATION SIGNAL

Also Published As

Publication number Publication date
EP0262705A2 (en) 1988-04-06
DE3751000D1 (en) 1995-03-02
DE3629931A1 (en) 1988-03-10
EP0262705B1 (en) 1995-01-18
EP0262705A3 (en) 1990-01-24
US4837850A (en) 1989-06-06

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